Somad, in turn, allegedly advertised the ring's prostitution services on Backpage.com and the Village Voice.

One of three "johns" who was arrested separately was David Mendelowitz, an ex-guidance counselor and dean of students at the prestigious Scarsdale High School, NY AG Eric Schneiderman said in a press release.

Mendelowitz, who was involved in the high school's drug task force, is charged with paying for both crack and sex, according to the attorney general. He's being arraigned today, a Schneiderman spokeswoman told BI.

Here's his mug shot:

New York Attorney GeneralDavid Mendelowitz

Here's a summary of the prostitution ring charges, from Schneiderman's press release:

Somad's lucrative enterprise partners were large-scale prostitution managers Ying Li, Wei Qu, Jian Hui Nu, Woosub Kim, Jay King and No Mi Kwon, and their employees, some of whom provided cocaine in addition to sex for sale. This enterprise utilized numerous shell corporations created with false information and which were used to process millions of dollars in credit card transactions which hid the true nature of the charges by claiming the corporations services were for cleaning, acupuncture, antiques, and party planning rather than for sex and/or drugs.

Each prostitution prong of the enterprise utilized the income derived from their illegal prostitution and drug related businesses to pay Somad for their advertising services, effectively laundering money through Somad, disguising the origin of the proceeds as legitimate advertisement payments. These payments to Somad were used to both pay Somad employees who ran the advertising business and to place additional ads which promoted their prostitution businesses. According to a review of Somad's financial documents, between January 1, 2010 and October 2012, prostitution businesses paid in excess of $3 million in advertising to promote their prostitution business.